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Intercellular interaction between FAP+ fibroblasts and CD150+ inflammatory monocytes mediates fibrostenosis in Crohn’s disease
Bo-Jun Ke, … , Séverine Vermeire, Gianluca Matteoli
Bo-Jun Ke, … , Séverine Vermeire, Gianluca Matteoli
Published July 23, 2024
Citation Information: J Clin Invest. 2024;134(16):e173835. https://doi.org/10.1172/JCI173835.
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Research Article Gastroenterology Inflammation Article has an altmetric score of 23

Intercellular interaction between FAP+ fibroblasts and CD150+ inflammatory monocytes mediates fibrostenosis in Crohn’s disease

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Abstract

Crohn’s disease (CD) is marked by recurring intestinal inflammation and tissue injury, often resulting in fibrostenosis and bowel obstruction, necessitating surgical intervention with high recurrence rates. To elucidate the mechanisms underlying fibrostenosis in CD, we analyzed the transcriptome of cells isolated from the transmural ileum of patients with CD, including a trio of lesions from each patient: non-affected, inflamed, and stenotic ileum samples, and compared them with samples from patients without CD. Our computational analysis revealed that profibrotic signals from a subset of monocyte-derived cells expressing CD150 induced a disease-specific fibroblast population, resulting in chronic inflammation and tissue fibrosis. The transcription factor TWIST1 was identified as a key modulator of fibroblast activation and extracellular matrix (ECM) deposition. Genetic and pharmacological inhibition of TWIST1 prevents fibroblast activation, reducing ECM production and collagen deposition. Our findings suggest that the myeloid-stromal axis may offer a promising therapeutic target to prevent fibrostenosis in CD.

Authors

Bo-Jun Ke, Saeed Abdurahiman, Francesca Biscu, Gaia Zanella, Gabriele Dragoni, Sneha Santhosh, Veronica De Simone, Anissa Zouzaf, Lies van Baarle, Michelle Stakenborg, Veronika Bosáková, Yentl Van Rymenant, Emile Verhulst, Sare Verstockt, Elliott Klein, Gabriele Bislenghi, Albert Wolthuis, Jan Frič, Christine Breynaert, Andre D’Hoore, Pieter Van der Veken, Ingrid De Meester, Sara Lovisa, Lukas J.A.C. Hawinkels, Bram Verstockt, Gert De Hertogh, Séverine Vermeire, Gianluca Matteoli

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